仁爱地理参考答案七年级
1. 七年级上册地理试卷及答案!
(考试形式:笔试 试题共两大题25小题 卷面分数:100分 考试时限:60分钟)
考生注意:本试卷分第Ⅰ卷和第Ⅱ卷两部分。请考生将第Ⅰ卷选择题的正确答案项字母代号写在第Ⅱ卷的相应答案栏内。写在第Ⅰ卷无效,交卷时只交第Ⅱ卷。
第 Ⅰ 卷
一、选择题(下列各题中,只有一个选项正确。共20小题,每小题2分,计40分)
1.“早穿棉袄、午穿纱”说明新疆的气候
A.终年寒冷 B.炎热干燥 C.昼夜温差大 D.温和多雨
2.某校在一次地理活动课中测得校园长为500米,宽为300米。若在长为50厘米,宽为30厘米的图幅上绘制该校平面图,应选用最合理的比例尺为
A.1:100000
B.1:10000 C.1:1000
D.1:100
3.有关经纬线的说法,正确的是
A.赤道是南北半球的分界线,本初子午线是东西半球的分界线
B.经线和纬线都是圆
C.所有经线的长度都相等
D.所有纬线的长度都相等
4.下列地点既属于东半球,又属于北半球的点是
A.116°E 40°N B.10°W 25°S C.80°W 30°N D.90°E 75°S
5.世界上跨经度最广的大洋是
A.太平洋 B.印度洋 C.大西洋 D.北冰洋
6.赤道横穿哪几个洲的大陆
A.南美洲 非洲 B.亚洲 欧洲
C.亚洲 非洲 D.大洋洲
亚洲
7.孔子“登泰山而小天下”主要是因为
A.泰山海拔特别高 B.泰山海拔特别低
C.孔子只登过泰山 D.泰山与周围地区的相对高度相差很大
8.宜昌市的人口是400万,面积是2万平方千米。人口密度是
A.200人 B.200人/平方千米 C.50人 D.50人/平方千米
9.下列说法不符合板块构造学说的是
A.全球有六大板块
B.板块内部较稳定
C.板块与板块交界地带,多火山、地震
D.大西洋是板块碰撞形成的
10.亚洲西部、非洲北部和印度北部主要分布的是
A.白种人 B.黄种人 C.黑种人 D.混血人种
11.同学们都知道《西游记》的故事,他们在“西天”取回的经书是属于下列哪种宗教
A.伊斯兰教 B.佛教 C.道教 D.基督教
12.在某日卫星云图上,宜昌上空一片绿色。说明宜昌的天气是
A.阴天 B.晴天 C.多云转阴 D.阴转小雨
13.每年夏初,长江中下游地区形成“黄梅时节家家雨、青草池塘处处蛙”的景观,时间长达一个月之久。其降水类型是
A.地形雨 B.对流雨 C.锋面雨 D.台风雨
14.某地一年内有两次阳光直射、全年昼夜平分。这个地方在
A.北回归线上 B.北极圈上
C.赤道上
D.南回归线上
15.“人间四月芳菲尽、山寺桃花始盛开”反映了受下列哪个因素的影响
A.纬度因素 B.海陆因素 C.地形因素 D.洋流因素
16.发达国家与发展中国家的差异主要受下面哪种因素的影响
A.政治制度 B.面积大小
C.人口多少
D.社会经济发展水平
17.近年来,中美贸易不断增长。我国货轮从上海港出发,沿海最近的路线到达大西洋西海岸的美国,将通过
A.苏伊士运河 B.巴拿马运河 C.马六甲海峡 D.直布罗陀海峡
18.非洲赤道附近的地区主要的气候类型为
A.热带沙漠气候 B.热带雨林气候 C.热带草原气候 D.地中海气候
19.2005年1月6日凌晨,我国第13亿个小公民在北京诞生,标志着我国13亿人口日推迟4年到来。13亿人口日推迟4年到来,是因为我国
A.人口基数大 B.人口老龄化加快
C.农村人口多 D.实行了计划生育
20.读下面的等高线图,AB坡和AC坡相比,坡度更
A.缓 B.陡 C.一样 D.无法确定
第 Ⅱ 卷
二、综合题
21.读经纬网图,完成下列问题。(10分)
(1)2008年夏季奥运会将在我国北京举行。许多外国朋友不知道北京的位置,请你在右图中标出“北京(116°E 、40°N)”的位置。
(2)当北京举行夏季奥运会时,南半球的悉尼是 季。
(3)写出图中A点的经纬度 ,B点经纬度 。
(4)B点在A点的
方向;B点位于
(热带、温带、寒带)。
(5)图中位于中纬度地区的点是 (A、B)。
(6)一代伟人毛泽东,戎马倥偬、南征北战,足迹遍及大江南北、长城内外。在兴致所至时挥毫写下了许多优美的诗篇“坐地日行八万里、巡天遥看一千河。”(七律·送瘟神)这句诗中蕴含的地理知识是 。
22.阅读某地区平面图及等高线图,完成下列问题。(10分)
(1)山顶A位于城镇E的 方向;山顶A与山顶B的相对高度是 ;若村庄C的气温为18℃,则山顶A的气温为 。
(2)点G到点F的实际距离是
,若汽车在G点以40千米/小时的速度行驶到F点,先向
方向行驶,然后转向 方向变化;途中大约需要 分钟。
(3)简述城镇E发展起来的原因?(2分)
23.读“某地月平均气温和月降水量简表”,完成下列各题。(9分)
月份123456789101112气温(℃)﹣5-24122024272420124﹣2降水(毫米)1015202530701902506025125
(1)根据表中的数据,在右图中将“各月平均气温曲线和月降水量柱壮图”补充完整。
(2)该地最热月的平均气温为 ℃;最冷月的平均气温为 ℃;该地的气温年较差为 ℃。
(3)该地月降水量超过100毫米的月份为 ;按照降雨的季节分配类型,属于 季多雨型。(冬、夏)
(4)根据图表分析,该地气候特征为 。
24.读下列的材料,思考并完成下列问题。(12分)
材料:细心的人会注意到,两年前的10月,我国第一艘载人飞船神舟五号发射成功。今年神舟六号的发射,又逢金秋时节,难道是巧合吗?不是。这是因为秋季的气象条件,最适合我国发射载人飞船。
飞船发射季节的选择,要考虑到各种可能影响到发射的因素,其中气象条件是最直接、最关键的决定因素。
飞船上天后,要由航天测控网对飞船实施测控管理。我国的航天测控网由多个地面测控站和4艘远望号航天测量船组成。这4艘测量船分别是太平洋上的“远望”一号和“远望”二号测量船,印度洋上的“远望”四号测量船,大西洋上的“远望”三号测量船。其中,3艘测量船都在纬度相对较高的南半球。
南半球的季节正好与我国相反。我国的春夏季节在南半球是秋冬季节,海况很恶劣,即使正常航行都难保安全,更不用说在海上执行测控任务了,因此不宜发射飞船。我国的秋冬季节在南半球是春夏季节,海况较好,便于航行和执行测量任务。因此,我国神舟一号至五号飞船的发射时机都选在与南半球相反的秋冬季节。(宜昌日报)
(1)影响“神舟六号”发射的因素中,最直接、最关键的决定因素是 ;
(2)飞船上天后,要由航天测控网对飞船实施测控管理。我国4艘远望号航天测量船实行测控的地点在 、 、 ;其中有3艘远望号航天测量船在 半球 纬度地区。
(3)“神舟六号”为什么要在秋季发射?(2分)
(4)“神舟六号”发射要考虑天气和气候的条件;我们的日常生产、生活也离不开天气和气候。请你试举两个事例说明天气和气候与我们的生产、生活的关系。(4分)
25.读“全球候鸟迁徙路线图”及相关材料,回答问题。(19分)
材料一: 在周边国家纷纷“中招”后,中国也终于未能幸免,此次禽流感为何来势如此汹汹?它是怎样传播扩散的?专家分析,此次禽流感,极有可能与迁徙候鸟参与传播有关。一般通过两种途径传染,一是通过禽肉、禽蛋等禽产品的流通进行传播,另一种就是通过飞禽传播,主要是通过大量携带病毒的候鸟迁徙进行传播。当携带病毒的野鸭、大雁等候鸟往南迁徙过冬时,其带有病毒的粪便及分泌物会污染迁徙沿途的水源、土壤等环境,当地禽类一旦接触带有病毒的环境,便会感染禽流感,并波及与之接触的人类。(新浪网)
材料二: 1878年以来,禽流感的暴发频率呈几何级数增加,使人们不得不思考其中原因。首先,随着社会和科技的进步,人们对于疾病的关注更胜从前,同时由于流通渠道的方便和快捷,信息共享的程度更高了,一些流行疾病由于人们的关注而显得发生得更加频繁。但是不可否认,人类的活动确实在不断改变着自然,改变着人类所有能够触及的生态环境。禽流感近年来的频繁暴发确实和人类对环境的改变有着一定的关系。(CCTV-农业频道)
(1)读“全球候鸟迁徙路线图”,候鸟迁徙的路线中经过中国的有
条;找出其中候鸟经过大洲、大洋最多的一条路线,并将大洲、大洋的名称写出来:
、 、 、 、 、 、 。
(2)图中不可能发生禽流感的大洲是 。
(3)认真阅读材料:此次禽流感的传播途径是什么?(2分)
(4)“人类的活动确实在不断改变着自然,改变着人类所有能够触及的生态环境。禽流感近年来的频繁暴发,确实和人类对环境的改变有着一定的关系。”结合你在地理课中所学到的人口与环境的关系的知识,谈谈你对这句话的理解?(8分)
第一学期学业期末考试
七年级地理试题参考答案及评分说明
一、选择题(每小题2分,共40分)
题号12345678910答案CCCADADBDA题号11121314151617181920答案BBCCCDBBDB
二、综合题(共5小题60分)
21题(10分) (1)略 (2分) (2)冬 (3)A点:60°E 40°N B点:100°E 20°N (4)东南 热带 (5)A (每空1分) (6)地球的运动(自转)、赤道长4万千米 (只要说出一点即得2分,共2分)。
22题(10分) (1)南 400米 (每空1分)10.8℃(2分) (2)3.15千米 西北 东北 5 (每空1分) (3)①地形平坦 ②交通便利 (每小点1分,共2分)
23题(9分) (1)略 (2分) (2)27 ﹣5或零下5 32 (3)7、8月 夏 (每空1分) (4)夏季高温多雨、冬季低温少雨(每小点1分,共2分)
24题(12分) (1)气象条件 (2)太平洋 印度洋 大西洋 南 相对较高 (每空1分) (3)我国的秋冬季节在南半球是春夏季节,海况较好,便于航行和执行测量任务。(2分) (4)略(采意给分,每个事例2分,共4分)
25题(19分) (1)3 亚洲、欧洲、北冰洋、北美洲、太平洋、大洋洲、印度洋 (无次序,每空1分) (2)南极洲 (1分) (3)一是通过禽肉、禽蛋等禽产品的流通进行传播,另一种就是通过飞禽传播。(每小点1分,共2分) (4)①由于人口的增加,为了获取资源,大规模砍伐森林、开垦草地、开采矿产等;这样就导致水土流失、土地荒漠化……致使当地的气候恶化。②人类在生产、生活过程中排放出废气、废烟、废水等,使全球气温升高、旱涝等灾害频繁发生。③人类的活动破坏了生态环境,加上环境的改变,迫使动物不得不转移,最终危及全人类;因此,人口的增长应与资源、环境相协调,与社会经济发展相适应。④作为中学生的我们更应该从我做起、从小事做起,保护环境;并宣传保护我们赖以生存的地球。(采意给分,每小点2分,共8分)
2. 七年级地理上册读与写答案
既然老师或者家长把你的东西写了,答案藏起来了,那么你最好认真做,老师会讲解的
3. 地理复习提纲,七年级下册仁爱版
我只写老师经常讲的易考点。
认识大洲:
位置(亚洲):亚洲大部分位于(北半球)和(东半球),欧洲(全部)位于北半球。
亚洲东临(太平洋),北临(北冰洋),南临(印度洋),西与(欧洲)相连,西南以(苏伊士运河)与(非洲)为邻,东北隔(白令海峡)与北美洲相望,东南望大洋洲。
地形特征:
1:地形以(高山高原)为主(非常重要,我这次期中考考过。)
2:地面起伏大,高低悬殊(地球之巅:珠穆朗玛峰,死海的湖面是世界陆地表面最低处)
3:地势中部高,四周低
气候特征:
1气候复杂多样(地跨寒温热三带,重点:温带海洋性气候没有)寒极:奥伊米亚康
2:气候大陆性显著(温带大陆性分布最广)
3:季风气候显著(亚洲东部和南部的季风最强盛,最典型)
欧洲气候:(温带气候为主,海洋性特征显著,主要有温带海洋性气候和地中海气候)
河流:(全球性四大长河:第一尼罗河(非)第二:亚马孙河(南美)第三长江(亚洲),第四密西西比河(北美)。
欧洲最长的河流:湄公河(澜沧江)流经国家:中缅老泰柬越(重要),欧洲流经国家最多的河是多瑙河。
亚洲水系分布特点:1:多发布于中部的高原山地,呈辐射状注入海洋2:内流区广大,锡尔河和阿姆河都是内流河
最深的淡水湖贝尔家湖,世界上面积最大的咸水湖里海,一半咸水一半淡水的湖巴尔克什湖
欧洲是世界上人口自然增长率最低的大洲,人口负增长,人口老龄化,(非洲与其相反)、
非洲海陆位置:东临印度洋,西临大西洋,北隔地中海和直布罗陀海峡与欧洲向往,东北隔红海与亚洲为邻,并以苏伊士运河为路上分界线。
非洲东南高,西北低。重点:以南北对衬分布。
((((((重点重点中的重点)))))),死也要记住:非洲屋脊:埃塞俄比亚高原,非洲最高峰:乞力马杂落山,最大海湾:几内亚湾,最大岛屿:马达加斯加岛,最大半岛:索马里半岛,非洲世界之最:最大沙漠撒花拉沙漠,最大盆地刚过盆地,最大断裂带东非大裂谷又叫地球的伤痕
中南半岛:地形:山河相见,纵裂分布,北高南低。气候特征:终年高温,分旱雨两季,河流自北向南流
马来群岛:地势崎岖,山岭很多,多火山地震。气候:热带雨林气候,终年高温多雨。河流短小,湍急
重点:东南亚处在亚洲与大洋洲,印度洋与太平洋的十字路口。马六甲海峡是沟通硬度样和太平洋的天然水道,也是连接欧洲,印度洋沿岸港口与太平洋港口的咽喉
物产:热带经济作物(国家产量第一):泰国天然橡胶,踪由,椰子菲律宾。石油硬度尼西亚,锡马来西亚,水稻泰国
五海三州两样之地,五海:里海黑海地中海红海阿拉伯海,三州:亚欧非,两样大西洋印度洋
霍尔木兹海峡西方生命线,又是世界油阀
西亚是基督教,犹太教,伊斯兰教的发源地,三教斗把耶路撒冷看作圣城,麦加大清真寺是世界最大清真寺
西欧有德国法国,意大利,英国等工业大国
钟表王国瑞士,欧洲的牧场和食品库丹麦,海洋渔业挪威,花卉种植业荷兰
欧洲西部旅游业法国西班牙意大利
挪威峡湾风光,午夜太阳。意大利孤独罗马,水城威尼斯,庞贝古城。西班牙沙滩斗牛场。瑞士阿尔卑斯山滑雪世界表都。德国慕尼黑啤酒节。法国卢浮宫蒙娜丽莎自由女神。奥地利音乐之都。英国伦敦塔桥,马克思墓
北极中间有海,南极是大陆。南极气候特正:酷寒烈风干燥
南极特有动物企鹅,北极北极熊
居民:北极因纽特人(黄种人)和拉普人,南极洲没有
南极暖季:每年11月到3月,可考察好时期。我国基地科考站:南极长城站,中山站,昆仑站(时间顺序),北极;黄河站
亲一定要感谢我呀,我的老腰都折了
4. 仁爱英语教材讲解七年级上册参考答案
教参书上有的
5. 七年级地理复习资料答案 急!!!
一)填空题
1.地球是一个________球体。赤道周长是_______千米。
2.__________是经线。__________是纬线。__________是本初子午线。
3.人们习惯上以________和________围成的经线圈为界,把地球划分为东西半球。亚洲位于东西半球的________半球。南北半球是以________为界来划分的。中国属于南北半球的________半球。
4.昼夜更替是__________的结果。
5.地球自转的方向是_______。地球自转一周需要约_______小时,也就是______天。
6.地球环绕太阳在______形轨道上公转,方向是_____,周期是_____。
7.地球公转的重要特点就是斜着身子绕着________转,地轴与公转轨道面的夹角为________度,且地轴倾斜的方向不变,北极总是指向________附近。
8.只有在________地区,才能见到太阳直射头顶的现象。这个地区获得太阳热量全球________,形成地球上的________带。
9.一年中,太阳直射两次的地方是________。太阳只能直射一次的地方是________。
10.在北半球,______月______日是白天最长的一天,______月______日是黑夜最长的一天。
11.热带和温带的界线是________。温带和寒带的界线是________。
12.当南极圈上整天都有太阳照射时,北京昼______夜______,澳大利亚是______季。
(二)选择题(有一个或一个以上的答案是正确的)
1.地球上五带形成的主要原因是 ( )
①地球自转 ②地球公转轨道呈椭圆形
③各地太阳照射的角度不同 ④地球表面有昼夜更替现象
2.形成四季的根本原因是 ( )
①地球自转 ②地球公转时,地轴总是倾斜的,且倾斜方向不变
③太阳直射 ④地球是个球体
3.东经172°,北纬25°属于 ( )
①东半球、北半球 ②东半球、南半球
③西半球、南半球 ④西半球、北半球
4.从3月21日前后到6月22日前后 ( )
①太阳直射点从北回归线向赤道移动
②北半球昼长夜短,且白昼越来越长
③南半球是夏季
④北半球出现极夜
5.下列地理现象,由于地球公转引起的是 ( )
①月亮东升西落 ②四季的形成
③昼夜长短变化 ④昼夜更替
6.北半球昼短夜长的时间是 ( )
①6月22日至12月22日之间
②12月22日至次年6月22日之间
③9月23日后至次年3月21日前
④3月21日后至9月23日前
7.6月22日,下列城市中昼最长的是 ( )
①哈尔滨 ②广州 ③武汉 ④北京
(三)读图题
1.读中国政区图,确认下列城市的经纬度(约数):
北京:经度________、纬度________
拉萨:经度________、纬度________
海口:经度________、纬度________
杭州:经度________、纬度________
2.读图回答:
(1)在图中,用箭头表示地球公转的方向.
(2)在图中填注地球位于①、②、③、④各点的日期,节气(指北半球而言).
(3)当地球位于①点时,北极圈昼长______小时.
(4)当地球位于③点时,上海的白天比青岛______.
3.读12月22日太阳照射地球示意图,回答:
(1)这一天太阳直射点的位置是________.
(2)此日,图中甲点夜长______小时,乙点正值______季,丙点是______季.
(3)此日,南半球昼______夜______.
(4)此日,北半球,纬度越高,白昼越______.
4.读右图,回答:
(1)在图中写出a、b、c、d、e各条纬线的名称.
(2)在图中相应位置填写五带的名称.
(3)有太阳直射的地区是________.
(4)有极昼、极夜现象的地区是________.
(5)写出下列城市,在五带中所属地带的名称:
哈尔滨(45°N)属________带.
海口(20°N)属________带.
雅加达(6°S)属________带.
摩尔曼斯克(69°N)属________带.
5.读右图,回答:
(1) A图位于东西半球的__________半球,南北半球的_________半球,B图
位于东西半球的__________半球,南北半球的_________半球.
(2)甲点的经度是________纬度是________.
乙点的经度是________纬度是________.
(3)甲、乙两点中,能出现太阳直射现象的是________点.
(4)6月22日这一天,甲点昼_____夜_____,乙点昼_____夜_____.
(5)在地球的五带中,甲点位于_______带,乙点位于_______带.
6.如果地球公转时,地轴不倾斜,而是垂直于公转轨道平面,那么太阳直射点的位置是________.
地球表面各地太阳照射角度的状况是________.
昼夜长短的状况是________.
各地的热量状况是________.
四季的形成状况是________.
《地 球》单元练习答案
(一)填空题
1.两极稍扁的不规则, 4万
2.在地球仪上,连接南北两极的弧线 赤道和与赤道平行的圆圈
国际上规定以通过英国伦敦格林尼治天文台旧址的经线叫0°经线,即
3.西经20° 东经160° 东 赤道 北
4.地球自转
5.自西向东 24 一
6.椭圆 从西向东 一年
7.太阳 66.5 北极星
8.南北回归线及其之间的地区 最多 热
9.南北回归线之间 南北回归线上
10.6月22日 12月22日
11.回归线 极圈
12.短 长 夏
(二)选择题(有一个或一个以上的答案是正确的)
1.③ 2.② 3.④ 4.② 5.②③ 6.③ 7.①
(三)读图题
1.东经116° 北纬40° 东经91° 北纬30°
东经110° 北纬20° 东经120° 北纬30°
2.(1)箭头从①指向②、②指向③、③指向④、④指向①都对
(2)①6月22日夏至日 ②9月23日秋分日
③12月22日冬至日 ④3月21日春分日
(3)24
(4)长
3.(1)南回归线 (2)12 夏 冬 (3)长 短 (4)短
(3)南北回归线之间
(4)北极圈以内和南极圈以内
(5)北温 热 热 北寒
5.(1)东、南、西、北
(2)东经85° 南纬20° 东经170° 北纬44°
(3)甲
(4)短 长 长 短
(5)热 北温
6.永远是赤道
从赤道向两极正午太阳高度角由90°逐渐减小到0°,且每个地点一年中的太阳照射角度不变全球昼夜平分
从赤道向两极热量逐渐减少,每个地点一年中的热量不变
全球没有四季之分
6. 七年级地理助学读本参考答案
认识地球
基础过关抄
D A B B A A B B
课后巩固
C B D C A C
7.(1)北极 南极 极半径 赤道半径 赤道(2)5.1亿 6371 四万 8.略
2课时
B B C B A A A B C
课后巩固
C D B C C C B A A
10.(1)40度N 20度W (2)正西 正南 东北 (3)东 北(4)甲和丙 甲和乙
11.(2)东南 (3)东 北 西 南
第二节
基础过关
B D B A C A B A
课后巩固
C C D B D D D C
9.(1)亚洲 北美洲 非洲 南美洲 (2)太平洋 大西洋 印度洋 北冰洋 (3)南美洲 亚洲 4 北美 南美 大洋 非
10.(1)4亚洲 6大洋洲 7南美洲 5欧洲(2)a太平洋 d北冰洋 c印度洋 d太平洋
(3)乌拉尔 (4)E:巴拿马运河 南美洲 太平洋 F: 苏伊士运河 非洲 地中海
我侄到的只有这些啦。希望对你有说帮助!!
7. 仁爱 七年级上册 100~104页答案
1、把200千米的水引到城市中来,这个任务交给了甲,乙两个施工队,工期50天,甲,乙两队合作了30天后,乙队因另有任务需离开10天,于是甲队加快速度,每天多修0.6千米,10天后乙队回来,为了保证工期,甲队速度不变,乙队每天比原来多修0.4千米,结果如期完成。问:甲乙两队原计划各修多少千米?
解:设甲乙原来的速度每天各修a千米,b千米
根据题意
(a+b)×50=200(1)
10×(a+0.6)+40a+30b+10×(b+0.4)=200(2)
化简
a+b=4(3)
a+0.6+4a+3b+b+0.4=20
5a+4b=19(4)
(4)-(3)×4
a=19-4×4=3千米
b=4-3=1千米
甲每天修3千米,乙每天修1千米
甲原计划修3×50=150千米
乙原计划修1×50=50千米
2、小华买了4支自动铅笔和2支钢笔,共付14元;小兰买了同样的1支自动铅笔和2支钢笔,共付11元。求自动笔的单价,和钢笔的单价。
解:设自动铅笔X元一支 钢笔Y元一支
4X+2Y=14
X+2Y=11
解得X=1
Y=5
则自动铅笔单价1元
钢笔单价5元
3、据统计2009年某地区建筑商出售商品房后的利润率为25%。
(1)2009年该地区一套总售价为60万元的商品房,成本是多少?
(2)2010年第一季度,该地区商品房每平方米价格上涨了2a元,每平方米成本仅上涨了a元,这样60万元所能购买的商品房的面积比2009年减少了20平方米,建筑商的利润率达到三分之一,求2010年该地区建筑商出售的商品房每平方米的利润。
解:(1)成本=60/(1+25%)=48万元
(2)设2010年60万元购买b平方米
2010年的商品房成本=60/(1+1/3)=45万
60/b-2a=60/(b+20)(1)
45/b-a=48/(b+20)(2)
(2)×2-(1)
30/b=36/(b+20)
5b+100=6b
b=100平方米
2010年每平方米的房价=600000/100=6000元
利润=6000-6000/(1+1/3)=1500元
4、某商店电器柜第一季度按原定价(成本+利润)出售A种电器若干件,平均每件获得百分之25的利润。第二季度因利润略有调高,卖出A种电器的件数只有第一季度卖出A种电器的6分之5,但获得的总利润却与第一季度相同。
(1)求这个柜台第二季度卖出A种电器平均每件获利润百分之几?
(2)该柜台第三季度按第一季度定价的百分之90出售A种电器,结果卖出的件数比第一季度增加了1.5倍,求第三季度出售的A种电器的利润比第一季度出售的A种电器的总利润增加百分之几?
解:(1)设成本为a,卖出件数为b,第二季度利润率为c
那么利润=a×25%=1/4a
第二季度卖出电器5/6b件
第一季度的总利润=1/4ab
第二季度利润=ac×5/6b=5/6abc
根据题意
1/4ab=5/6abc
c=1/4×6/5
c=3/10=30%
(2)第一季度定价=a(1+25%)=5/4a
第三季度定价=5/4a×90%=9/8a
第三季度卖出(1.5+1)b=2.5b件
第三季度的总利润=9/8a×2.5b-2.5ab=5/16ab
第三季度比第一季度总利润增加(5/16ab-1/4ab)/(1/4ab)=(1/16)/(1/4)=0.25=25%
5、将若干只鸡放入若干个笼中。若每个笼中放4只,则有一只鸡无笼可放;若每个笼中放5只,则恰有一笼无鸡可放,那么,鸡、笼各多少?
设鸡有x只,笼有y个
4y+1=x
5(y-1)=x
得到x=25,y=6
6、用白铁皮做罐头盒,每张铁皮可制成盒身25个,或制盒底40个,一个盒身和两个盒底配成一套罐头盒,现有36张白铁皮,用多少张制盒身,多少张制盒底可以使盒身与盒底正好配套?
分析:因为现在总有36张铁皮制盒身和盒底.所以x+y=36.公式;用制盒身的张数+用制盒底的张数=总共制成罐头盒的白铁皮的张数36.得出方程(1).又因为现在一个盒身与2个盒底配成一套罐头盒.所以;盒身的个数*2=盒底的个数.这样就能使它们个数相等.得出方程(2)2*16x=40y
x+y=36 (1)
2*16x=40y (2)
由(1)得36-y=x (3)
将(3)代入(2)得;
32(36-y)=40y
y=16
又y=16代入(1)得:x=20
所以;x=20
y=16
答:用20张制盒身,用16制盒底.
25、从A城到B城,水路比陆路近40千米,上午11时,一只轮船以每小时24千米的速度从A城向B城行驶,下午2时,一辆汽车以每小时40千米的速度从A城向B城行驶,轮船和汽车同时到达B城,求A城到B城的水路和陆路各多长?
解:设水路a千米,陆路b千米
a+40=b(1)
a/24-3=b/40(2)
(1)代入(2)
a/24-3=(a+40)/40
1/60a=4
a=240千米
b=240+40=280千米
水路240千米,陆路280千米
注意:上午11时到下午2时相差3个小时
26、某汽车在相距70千米的甲乙两地往返行驶,由于路程中有一个坡度均匀的小山,所以去时用时2.5小时,返回使用时2.3小时,已知汽车在平地上每小时行驶30千米,下坡时每小时行驶40千米,上坡时每小时行驶20千米,求的上坡路,下坡路及平地的路程?
解:设去时上坡a千米,下坡b千米,则平路是70-a-b千米
a/20+b/40+(70-a-b)/30=2.5(1)
a/40+b/20+(70-a-b)/30=2.3(2)
(1)-(2)
a/40-b/40=0.2
a-b=8
a=b+8代入(1)
解得
b=4千米
a=12千米
所以去的时候平路70-4-12=54千米,上坡12千米。下坡4千米
1.两车站相距275km,慢车以50km/一小时的速度从甲站开往乙站,1h时后,快车以每小时75km的速度从乙站开往甲站,那么慢车开出几小时后与快车相遇?
设慢车开出a小时后与快车相遇
50a+75(a-1)=275
50a+75a-75=275
125a=350
a=2.8小时
2.一辆汽车以每小时40km的速度由甲地开往乙地,车行3h后,因遇雨,平均速度被迫每小时减少10km,结果到乙地比预计的时间晚了45min,求甲 乙两地距离。
设原定时间为a小时
45分钟=3/4小时
根据题意
40a=40×3+(40-10)×(a-3+3/4)
40a=120+30a-67.5
10a=52.5
a=5.25=5又1/4小时=21/4小时
所以甲乙距离40×21/4=210千米
3、某车间的钳工班,分两队参见植树劳动,甲队人数是乙队人数的 2倍,从甲队调16人到乙队,则甲队剩下的人数比乙队的人数的 一半少3人,求甲乙两队原来的人数?
解:设乙队原来有a人,甲队有2a人
那么根据题意
2a-16=1/2×(a+16)-3
4a-32=a+16-6
3a=42
a=14
那么乙队原来有14人,甲队原来有14×2=28人
现在乙队有14+16=30人,甲队有28-16=12人
4、已知某商店3月份的利润为10万元,5月份的利润为13.2万元,5月份月增长率比4月份增加了10个百分点.求3月份 的月增长率。
解:设四月份的利润为x
则x*(1+10%)=13.2
所以x=12
设3月份的增长率为y
则10*(1+y)=x
y=0.2=20%
所以3月份的增长率为20%
参考
8. 仁爱同步练习册七年级答案要新版
Unit 5 Our School Life
Topic 1 How do you usually come to school?
Section A
I. 1. by ship 2. by plane 3. on foot 4.by train 5. by bus 6. by bike 7. by subway 8. by boat
II. 1. to 2. by, by, on 3. for, on 4. at
III. 1. C 2.B 3. C 4.A 5.A
IV. 1. does 2. look 3.going 4. to watch 5. Does, play
V. 1. Let’ go to Sanya by car. 2. How does your teacher usually go to work? 3. We can come to Hainan by train now. 4. Does Michael always come to school on foot?
Section B
I. 1.weekdays 2.walks 3.ride 4.plane 5.early 6.never 7.sometimes 8.seldom
II.1. rides a bike 2.takes a bus 3. on foot 4.take a ship 5.flies to
III. 1. C 2. A 3.A 4.C 5.B
IV. 1. B 2.D 3.E 4.A 5.C
V. 1. take a bus 2. watches TV 3. on weekdays 4.by bike/ on a bike, ride a bike
Section C
I. 1.American/ Americans 2. swimming 3. has 4. Twice 5.listens
II. 1.C 2. A 3.B 4.B 5.C
III. 1. does her 2. don’t walk 3. Does, play 4. How often do 5. What does, do
IV. 1.life 2.few 3.walk 4.seldom 5.lunch 6.rest 7.over 8.free 9.times 10.don’t
V. 1. B 2.A 3.B 4.B 5.C 6.A 7.C 8.B 9.A 10.A
Section D
I. 1.gets 2.begin 3.Does, catch 4.do, eat 5.reading
II. 1. B 2.C 3.C 4. A 5.C
III. 1. for a little while 2.What time, get home 3. quarter to three 4. three times a week 5. How often
IV. 1.B 2. A 3. B 4.B 5.C
V. Mike’s Day
Mike is a student. On weekdays, he gets up at 6:00 a.m. and then he reads English at 6:15 a.m. He has breakfast at 6: 40 a.m. He usually has milk, bread and an egg for breakfast. At 7:15 a.m., he goes to school by bike. He has seven classes a day. He likes English very much. At 5:00 p.m., school is over and he plays soccer with his classmates at school. He gets home at 6:00 p.m. He has supper with his parents at 6:30 p.m. After supper, he does his homework and he goes to bed at 10: 30 p.m. He has a happy day every day.
Topic 2 He is running on the playground.
Section A
I. 1. playground 2. teachers’ 3. dining 4. building 5. library
II. 1. cleaning 2. making 3. running 4. dancing 5. putting 6. talking 7. beginning 8. sleeping 9. writing
III. 1.B 2. A 3. C 4.C 5.B
IV. 1.boring 2. is singing 3. building 4. am making 5. are swimming
V. 1. Zhou Bin is riding a bike at the moment. 2. Look! The boys are playing soccer. 3. The girl plays the piano after school. 4. Helen likes listening to music very much.
Section B
I. 1.shelves 2. putting 3. using 4.return 5. pleasure
II. 1. C 2.B 3.A 4.C 5.B
III. 1. is cleaning 2. on time 3. What’re, looking for 4. a few 5. is putting on
IV. 1. D 2. B 3.A 4.E 5.C
V. Li Ming: Excuse me, do you have a camera, Jane?
Jane: Yes. I do.
Li Ming: Great! May I borrow it, please? I want to go to the zoo.
Jane: Of course.
Li Ming: How long can I keep it?
Jane: For three days.
Li Ming: OK. I’ll return it on time.
Jane: Good. I’ll take it to you this afternoon.
Li Ming: Thanks very much.
Jane: It’s a pleasure.
Section C
I. 1. around 2. to, on 3. of 4. at 5. from I
I.1. C 2. C 3. B 4. A 5. B
III. 1. is doing 2. isn’t drawing 3. Is , sleeping 4. What are, doing 5. Who are, writing
IV. 1. B 2. C 3. C 4. A 5.C
V. 1. A few students are in the classroom now. 2. Kangkang is reading Ren’ai English Post. 3. Jane and Maria are talking. 4. Wang Wei is doing his homework. 5. Sally is cleaning the blackboard at the back of the classroom.
Section D
I. 1.B 2. B 3.C 4.C 5.B
II. 1.shelves 2.Does, write C. wonderful 4.is sitting 5. Japanese
III. 1. are looking for 2. show me around 3. at the back of 4. a friend of mine/ one of my friends 5. isn’t writing to
IV. 1. C 2. B 3.C 4. A 5.B 6.C 7.A 8.A 9.B 10.C
V. It’s a fine day today. My friends and I are in the park now. We can see many people in the park. Look! Some boys are swimming and some girls are dancing. Their mothers are sitting on the chair and drinking. My friend Ann is reading near the swimming pool. I am playing a dog with Lily. We are all very happy.
Topic 3 My school life is very interesting.
Section A
I. 1. Wednesday 2. Saturday 3. Monday, Friday 4. Sunday 5. What day
II. 1. C 2. A 3.B 4. C 5. A
III. 1. is having a math class 2. How many lessons/classes 3. doing outdoor activities 4. is over 5. works on
IV. 1. What 2. day 3. having 4. class 5. Do 6. do 7. What 8. time 9. is 10. over
V. 1. It’s Monday today. 2. The students are having a geography class now. 3. The teacher is talking about a map of China. 4. The students are listening to the teacher. 5. They like geography very much.
Section B
I. 1.subjects 2.difficult 3. interesting 4.boring 5.Which
II. 1.best 2. meeting 3. interesting 4.is learning 5.boring
III. 1. C 2.B 3. A 4. A 5. C
IV. 1. D 2.B 3. A 4.E 5. C
V. 1. What day is it today? 2. What class are they having? 3. What do you think of math?/ How do you like math? 4. Which subject do you like best? / What’s your favorite subject? 5. What’s your favorite subject? / Which subject do you like best?
Section C
I. 1.A 2. C 3. B 4. B 5.C
II. 1. likes, best 2. What day 3. Why don’t 4. Which bag 5. How often
III. 1. between, and 2. from, to 3. be friendly(kind) to 4. like best 5. something about
IV. 1. interesting 2. about 3. learn 4. favorite 5. easy 6. because 7. activities 8. best 9. well 10. yours
V. 1. A 2. C 3. C 4. B 5. C
Section D
I. 1.C 2.A 3.C 4.C 5.B
II.1. is having 2.walks 3.draw 4.are doing 5. helps 6. studies 7. Is,swimming 8. Do,go 9. are,looking 10. does,come
III. 1.C 2. B 3. A 4. C 5. A 6. B 7. C 8. B 9. A 10. C
IV. Dear Dave,
I am very happy to know your school life is very interesting. Now let me tell you something about mine. On weekdays, classes begin at 7:30. I have four classes in the morning and three in the afternoon. Of all the subjects, I like music best. I can sing and dance very well. But I don’t like math. I think it’s very difficult. At school, my teachers and classmates are all very friendly to me. We often play games after school on the playground. Ping-pong is my favorite outdoor activities. Sometimes I draw pictures and sometimes I swim with my friends. I like my school life very much. I think it’s wonderful. Write to me soon. Best wishes!
Yours,
Liu Ying
Unit 6 Our Local Area
Topic 1 Is there a computer in your study?
Section A
I. 1. garden 2. study 3. kitchen 4. living 5.bathroom
II. 1. at 2. to 3. behind 4. in 5. on
III.1. C 2. A 3. B 4. A 5. C
IV. 1. on the first floor 2. There is, in the front of 3. next to 4. is playing with 5. Are there any
V. 1. There is a car in front of the house. 2. There are some books on the shelf. 3. Is there a computer on the desk? 4. Are there any pandas in the zoo?
Section B
I. 1. B 2. B 3. B 4. C 5. C
II. 1. living 2. are 3. keys 4. second 5. are talking
III. 1. There are 2. isn’t any 3. there aren’t 4. What is 5. How many birds
IV. 1. E 2. A 3. D 4. C 5. B
V. 1. under, There’re 2. on/in the river, there is 3. What is 4. How many apples 5. How much, is there
Section C
I. 1. center 2. right 3. beautiful/big 4. people 5. floor
II. 1. on 2. under 3. in 4. on 5.in 6. At 7. on 8. behind 9. near 10. to
III. 1. A 2.A 3. C 4. B 5. C
IV. 1. C 2.A 3.C 4.A 5. B 6. A 7. C 8. B 9. B 10. A
Section D
I. 1. There is, has 2. is there 3. Are there, have 4. there is 5. are there, have
II. 1. has 2. There’s 3. playing 4. shelf 5. different 6. In 7. reads 8. learns 9. look 10. at
III. 1. No, he doesn’t. 2. There’s a desk near the window. 3. Yes, there are. 4. There are two. 5. It’s behind the door.
IV. Dear Dave,
I am very glad to get a letter from you. You want to know something about my school. Now let me tell you. My school is big and beautiful. Our classroom building is in the center of the school. There are eight floors in it. On the second floor there is a big reading room, two computer rooms and three science labs. The students love playing computers. The reading room is open from Monday to Friday. We often read books in it. We can learn a lot from those books. At the back of the classroom buildings, there is a small garden. There are lots of trees and flowers. Sometimes I listen to music and sometimes I talk with my classmates in it. We all like our school very much.
Topic 2 What kind of home do you live in?
Section A
I. 1. country 2. months 3. quiet 4. furniture 5. rent
II. 1. B 2. C 3. C 4. A 5. C
III. 1. a family of three 2. with thirty floors 3. lives in 4. rent,to 5. a double room
IV. 1. C 2. B 3. E 4. A 5. D
Section B
I. 1. loudly 2. neighbor 3. museum 4. mail 5. bank
II. 1. renting 2. pianos 3. parking 4. quietly 5. talking
III. 1. C 2. C 3. C 4. A 5. B
IV. 1. on the street corner 2. at the end of 3. playing the guitar 4. the matter with/ wrong with, am looking for V. 1. speak 2. to 3. that 4. watching 5. loud 6. really
Section C
I. 1. C 2. A 3. C 4. A 5. B
II. 1. isn’s anything 2. far from 3. the matter with 4. What kind of 5. Don’t park
III. 1. D 2. B 3. E 4. C 5. A
IV. 1. B 2. A 3. B 4. C 5. C 6. B 7. C 8. A 9. B 10. C
Section D
I.1. C 2. B 3. C 4. A 5. A
II. 1. noisy 2. playing 3. to check 4. children 5. is
III. 1. B 2. A 3. B 4. C 5. A
IV. Dear Jane,
How are you? Thank you for your letter. You ask me if (是否) I like living in the city or in the country. Now I tell you. I like living in the countryside. The countryside is always quiet and there is fresh air. I can live in a big house with a big yard. In my free time, I can play with my dog in the yard. There are many beautiful flowers in the yard, too. I can also go fishing and swimming in the river near my home. I think the life in the countryside is very interesting. Do you think so?
Please write to me soon.
Yours,
Maria
Topic 3 Which is the way to the post office?
Section A
I. 1. to 2. along/ down, at 3. to, on 4.from 5.between
II. 1. C 2. B 3. B 4. A 5. A
III. 1. Is there , near 2. Which, way 3. go/walk across 4. take, on
IV. 1. across from 2. turn left 3. the way to 4. get to 5. Go across/ Cross, on your right
V. 1. A 2. D 3. C 4. E 5. B
Section B
I. 1. until 2. public 3. miss 4. change 5. kilometers
II. 1. B 2. C 3. B 4. A 5. C
III. 1. go straight , Don’t turn 2. need to change to 3. Walk on, traffic lights 4. How far, (away) from
IV. 1. E 2. B 3. D 4. A 5. C
V. 1. B 2. B 3. C 4. C 5. A
Section C
I. 1. A 2. C 3.B 4. C 5. A
II. 1. third 2. to help 3. careful 4. to take 5. across
III. 1. C 2. B 3. A 4. C 5. A 6. C 7. A 8. C 9. B 10. C
IV. 1. Be careful when you cross the street. 2. Look both ways before you cross the street. 3. Don’t play football in the street. 4. Don’t drive after drinking.
Section D
I. 1. B 2. B 3. A 4. C 5. A
II. 1. Keep quiet 2. Don’t be late for 3. lose their lives 4. a ticket for speeding 5. to wait for your turn
III. 1. T 2. F 3. F 4. T 5. F
IV. 1. Go to school on time. 2. Listen to the teacher carefully in class. 3. Do your homework after class. 4. Clean the classroom twice a day. 5. Help each other and learn from each other. 6. Don’t talk in class. 7. Don’t play computer games or watch TV too much. 8. Don’t be late for school. 9. Don’t eat in class. 10. Don’t draw on the wall.
Unit 7 The Birthday Party
Topic 1 When is your birthday?
Section A
I. 1. born 2. sport 3. March 4. February 5. alone
II.1. A 2. B 3. C 4. C 5. B
III. 1. were 2. Was,born 3. they weren’t 4. When was 5. Where were you
IV.1. D 2. C 3. E 4. B 5. A
Section B
I. 1. date 2. celebrating 3. ninth 4. birthday 5. twelfth
II. 1. were 2. am coming 3. fifth 4. to have 5. to celebrate
III.1. wasn’t 2. Were your 3. What was, date 4. When is 5. When,where
IV. 1. C 2. C 3. B 4. A 5. B
V. 1. were born on 2. know about 3. plan to have a party 4. is coming, to do
Section C
I. 1. is 2. was,Were 3. were, are 4. is, was 5. was
II. 1. C 2. A 3. B 4. C 5. C
III. 1. the shape of 2. was like 3. How wide 4. use, for/ to do 5. must be
IV. 1. B 2. A 3. E 4. C 5. D
V. 1. C 2. A 3. B 4. A 5. B
Section D
I. 1. surprise 2. candles 3. shape 4. eighth 5. special
II. 1. A 2. C 3. C 4. A 5. B
III. 1. A 2. C 3. A 4. B 5. C 6. B 7. C 8. A 9. B 10. A
IV. I have a good friend. Her name is Kate. She is 13. She was born on June 3rd, 1998. Tomorrow is her birthday. I am planning to celebrate it with her. I would like to see a movie with her. Then we can go to KFC for dinner. Kate likes singing very much, so I want to buy her two CDs. I’m sure she’ll like them very much.
Topic 2 Can you dance or draw?
Section A
I. 1. C 2. A 3. B 4. A 5. C
II. 1. can’t perform 2. Can, sing 3. Can, or 4. can do 5. We can hate a good time at the party.
III. 1. B 2. E 3. D 4. A 5. C
IV. 1. Can, perform 2. What do, can play 3. Can or , draw 4. is doing some washing/ cleaning
Section B
I. 1. C 2. B 3. A 4. C 5. B
II. 1. can dance, can’t 2. a little 3. can do, perform ballet 4. ride a bike, drive a car
III. 1. Can 2. Were 3. was 4. When 5. in 6. would 7. dance 8. can’t 9. perform 10. time
IV. 1. The man can cook very well. 2. Liu Ying can’t swim at all. 3. We are planning to have a birthday party for Kangkang. 4. They are having a good time now.
Section C
I. 1. C 2. A 3. A 4. C 5. C
II.1. count 2. climbing 3. were 4. performing 5. couldn’t
III. 1. could make 2. couldn’t, was 3. Could, swim 4. does well in dancing 5. at the age of
IV. 1. A 2. C 3. A 4. A 5. B 6. B 7. A 8. C 9. C 10.B
Section D
I. 1. can, couldn’t 2. could, could 3. Can 4. couldn’t, can 5. Could, couldn’t, can
II. 1. count 2. jumping 3. couldn’t 4. celebrate 5. alone
III. 1. C 2. C 3. A 4. A 5. B
IV. 1. F 2. T 3. F 4. T 5. F
V. Hello, my name is Tim. That’s my good friend, Michael. He is very smart. When he was five, he could ride a bike and write. But I couldn’t. I could swim and draw at the age of five. Now we are in the same class. We often play ball games together. Michael is good at playing basketball while I do well in soccer. We hope we can be in the Olympic Games one day.
Topic 3 We had a wonderful party.
Section A
I. 1.recited 2. performed 3. studied 4. danced 5. stopped 6. celebrated 7. planned 8. carried 9. sang 10. did 11. was/were 12. went
II. 1. A 2. A 3. B 4. C 5. C
III. 1. himself 2. live 3. did 4. had 5. enjoyed
IV. 1. recited 2. didn’t sing 3. Did, perform 4. they didn’t 5. did, do
V. 1. C 2. A 3. B 4. D 5. E
Section B
I. 1. enjoys 2. fell 3. washed 4. happened 5. truth
II. 1. A 2. C 3. B 4. C 5. A
III. 1. had a good time/ enjoyed themselves 2. performed magic tricks 3. came back home 4. tell a lie 5. happened to, fell down from/fell off
IV. 1. Lin Tao’s family went to the park yesterday. 2. His father recited a poem. 3. Lin Tao’s mother played the guitar. 4. Lin Tao sang a song. 5. They were all very happy.
Section C
I. 1. by 2. to, to 3. with, on 4. out, in 5. of, around
II. 1. by hand 2. blew out 3. is making a silent wish 4. in one breath
III. 1. missed 2. photos 3. danced 4. recited 5. singing 6. played 7. lost 8. fell 9. enjoyed 10. present
IV. 1. C 2. A 3. B 4. E 5. D
Section D
I. 1. C 2. B 3. C 4. A 5. B
II. 1. forgot 2. funny 3. yourselves 4. truth 5. did, buy
III. 1. C 2. C 3. A 4. B 5. B 6. C 7. A 8. B 9. C 10. C
IV. Li Lei is a student. He got up late this morning. He went to school by bike at once. He rode too fast. On the corner of the street, his bike hit an old woman. The woman fell and her leg was hurt. Li Lei took the woman to the hospital. He looked after her in the hospital. Li Lei’s friends knew about it and they came to the hospital after class. They brought her some flowers. The woman was very happy.
Unit 8 The Seasons and the Weather
Topic 1 What’s the weather like in spring?
Section A
I. 1. seasons 2. weather 3. Spring 4. rained 5. snowmen
II. 1. B 2. A 3. C 4. A 5. A
III. 1. What was,like 2. for climbing 3. Her, season 4. How, weather 5. Why, do
IV. 1. D 2. E 3. B 4. C 5. A
Section B
I. 1. windy 2. rainy 3. cloudy 4. snowy 5. sunny 6. foggy
II. 1. C 2. B 3. A 4. C 5. A
III. 1. cloudy 2. to climb 3. best 4. to make 5. sunny
IV. 1. What’re you doing? 2. It’s rainy today. 3. What’s the weather like in Haikou?/ How’s the weather in Haikou? 4. What’s the temperature? 5. Have a good time.
V. Good morning! Here is a weather report for some cities in Hainan. Haikou is rainy. The temperature is between 22 ℃ and 33 ℃. Don’t forget to take an umbrella when you go out. Qionghai is cloudy. The high temperature is 24 ℃ and the low temperature is 34 ℃. Sanya is sunny. It’s a little hot. The temperature is between 25 ℃ and 36 ℃. It’s a good time to swim. Thank you for listening.
Section C
I. 1. shines 2. holidays 3. travel 4. arrived 5. ourselves
II. 1. A 2. C 3. B 4. B 5. A
III. 1. had better be friendly to 2. finds out 3. arrived at, playing soccer 4. remember to take, go out 5. in most parts of
IV. 1. B 2. A 3. A 4. C 5. B 6. C 7. B 8. C 9. A 10.C
Section D
I. 1. C 2. C 3. C 4. B 5. C
II. 1. fell 2. harvesting 3. to wear 4. rained 5. leaves
III. 1. B 2. C 3. A 4. C 5. A
IV. Dear Jack,
I’m very glad to get your letter. You want to know about the weather in Hainan. Now let me tell you. The weather here is very good all year around. Spring lasts from March to May. It’s very warm. Sometimes it rains , but not heavily. Summer begins in June. It’s a very hot season. The sun shines brightly every day. People like wearing sunglasses and shorts. Fall comes after summer. The weather gets a little cool, but the leaves don’t turn yellow and they seldom fall from the trees. December, January and February are in winter. It isn’t cold at all. It’s my favorite season. You can see green trees and red flowers here and there. It never snows in Hainan, so I can’t make snowmen. If you want to come here, you’d better come in winter. I am sure you’ll have a good time.